“Depending on the state you live in, you may be required to obtain an occupational license to become a plumber, an insurance agent, a hair braider, a manicurist, or even a racetrack employee. These licenses, which can take dozens or hundreds of hours of training to procure, afford privileged access to specific industries—and they can be revoked if certain standards aren’t met. But in six states, the same standard isn’t applied to one surprising profession: law enforcement.”